NIL HEARDRECEPTION LOG

HM01 Cuba hybrid voice + RDFT

tier B · keyed-tone

10715 kHz AM · 2026-09-18 21:58:13Z · 05:00 · received at Shrewsbury, Vermont, USA

Spectrogram of HM01 Cuba hybrid voice + RDFT, 10715 kHz AM, 2026-09-18 21:58:13Z, 05:00: keyed-tone 100% · tone 240 Hz · keying 0.25 Hz depth 0.89
spectrogram 0–6.0 kHz · analysis blocks: keyed-tone
loop [ ] · speed in the player bar · deep link #t=seconds ⤓ FLAC 5.5 MB ⤓ Opus 1208 kB { }
What was heard
keyed-tone 100% · tone 240 Hz · keying 0.25 Hz depth 0.89 — dominant tone 240 Hz, keyed at 0.25 Hz (depth 0.89). Machine description of the sound by the rig's classifier; it sorts, it does not certify a station.
Receiver
KiwiSDR, Shrewsbury, Vermont, USA (FN33om) · 82m (270ft) center fed doublet @ 20m (65ft) MF through HF · reported SNR 23 dB — thanks to the operator. Receivers
Provenance
sha256 4ee6b221e6bbf35baf06799a3b0ce4c3ea48026aeb7d3970a1719fa58aa01101
source 05:00 WAV, 11999 Hz mono
kiwirecorder.py (jks-prv/kiwiclient v1.11) · rig item 2026-09-18T2158Z-10715-hm01-10715
Heard in the record
— linked once the record exists.
Notes

rig: priyom HM01 grid Fri 22:00Z 10715 kHz https://priyom.org/number-stations/digital/hm01/schedule; station marked Hibernated — second probe of the night

Licence
CC BY 4.0 — credit NIL HEARD / Reception Log. The recording is ours; the transmission is somebody else's. Descriptions describe sound, never content — why.
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